Respiratory filtration mask



FIG. 1 is a front elevation view of a respiratory filtration maskshowing our new design worn by a person.

FIG. 2 is a left side elevation view thereof.

FIG. 3 is a right side elevation view thereof.

FIG. 4 is a top, front perspective view thereof.

FIG. 5 is a bottom, front perspective view thereof.

FIG. 6 is an enlarged front elevation view of the respiratory filtrationmask of FIG. 1 shown flattened.

FIG. 7 is a rear elevation view thereof.

FIG. 8 is a top plan view thereof.

FIG. 9 is a bottom plan view thereof.

FIG. 10 is a left side elevation view thereof; and,

FIG. 11 is a right side elevation view thereof.

The broken lines in FIGS. 1 through 5 showing a person wearing therespiratory filtration mask are illustrative of environmental structureonly and form no part of the claimed design.

The stippled pattern in FIG. 7 is meant to represent a first fabric. Thecrosshatched pattern in FIGS. 6, 7, 10 and 11, although shownintermittently, is meant to represent a second fabric and is understoodto be uniformly distributed over the surfaces of the claimed design notcovered by the stippled pattern.

CLAIM The ornamental design for a respiratory filtration mask, as shownand described.